Home / 20,454.05-28,223.60-11,956.97

Finding the Fourth Proportional to 20,454.05, 28,223.60 and 11,956.97

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Solution

The fourth proportional to 20,454.05, 28,223.60 and 11,956.97 is: 16,498.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,454.05 : 28,223.60 = 11,956.97 : x
  2. Step 2: Convert to fraction form
    20,454.05/28,223.60 = 11,956.97/x
  3. Step 3: Cross multiply
    20,454.05x = 28,223.60 × 11,956.97
  4. Step 4: Simplify right side
    20,454.05x = 337,468,537.59
  5. Step 5: Solve for x
    x = 337,468,537.59/20,454.05
  6. Step 6: Final answer
    x = 16,498.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.